We are not very far from flexible phones!

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? This is what Sony was upto, back in 2007, a flexible display, functioning, but with minor glitches.

? This is what Samsung show cased at CES 2011, a fully functional flexible display, getting video input from an external source.

? And finally, this is what Nokia showcased at Nokia World, alongside the launch of their new Lumia phones. A working prototype of a flexible phone. The flexibility is actually used to navigate through the UI.